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<table width="100%" summary="page for leaftemp"><tr><td>leaftemp</td><td style="text-align: right;">R Documentation</td></tr></table>

<h2>Leaf and Air Temperature Data</h2>

<h3>Description</h3>

<p>These data consist of measurements of vapour pressure and of the 
difference between leaf and air temperature.
</p>


<h3>Usage</h3>

<pre>leaftemp</pre>


<h3>Format</h3>

<p>This data frame contains the following columns:
</p>

<dl>
<dt>CO2level</dt><dd><p>Carbon Dioxide level
<code>low</code>, <code>medium</code>, <code>high</code> </p>
</dd>
<dt>vapPress</dt><dd><p>Vapour pressure</p>
</dd>
<dt>tempDiff</dt><dd><p>Difference between leaf and air temperature</p>
</dd>
<dt>BtempDiff</dt><dd><p>a numeric vector</p>
</dd>
</dl>



<h3>Source</h3>

<p>Katharina Siebke and Susan von Cammerer, Australian National University.
</p>


<h3>Examples</h3>

<pre>
print("Fitting Multiple Lines - Example 7.3")

leaf.lm1 &lt;- lm(tempDiff ~ 1 , data = leaftemp)
leaf.lm2 &lt;- lm(tempDiff ~ vapPress, data = leaftemp)
leaf.lm3 &lt;- lm(tempDiff ~ CO2level + vapPress, data = leaftemp)
leaf.lm4 &lt;- lm(tempDiff ~ CO2level + vapPress + vapPress:CO2level,
  data = leaftemp)

anova(leaf.lm1, leaf.lm2, leaf.lm3, leaf.lm4)

summary(leaf.lm2)
plot(leaf.lm2)

</pre>


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